Plastic bag holding rack



FIG. 1 is a perspective view of a plastic bag holding rack showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a side elevational view thereof;

FIG. 4 is a rear elevational view thereof; and

FIG. 5 is a bottom plan view. 

The ornamental design for a plastic bag holding rack, as shown and described. 